Paper-box-forming machine.



A. G. WOBUS & W. L. HUMPHREYS. PAPER BOX FORMING MACHINE.

APPLICATION FILED SEPT. 6, 1910.

1,017,836, Patented Feb.20, 1912.

3 SHEETS-SHEET 1.

26 33 Z 2 if I jnflentors COLUMBIA PLANOORAPH CO.,WASHINGTON. n. c.

A. G. WOBUS & W. L. HUMPHREYS. PAPER BOX FORMING MACHINE.

APPLICATION FILED SEPT. e, 1910.

1,017,836. Patented Feb. 20, 1912 3 SHEETSSHEET 2. E66 1 )lfaessfl- J2firm/07S 9/% W 40% COLUMBIA PLANDGRAPH 50.. WASHINGTON. h, (4

A. G. WOBUS & W. L. HUMPHREYS.

PAPER BOX FORMING MACHINE.

APPLICATION FILED SEPT. 6, 1910.

' 1,017,836, Patented Feb. 20, 1912.

3 SHEETS-QHEBT 3.

Im/en tars UNITED STATES PATENT OFFICE.

ADOLPH Gr. WOIBUS AND WALTER L. HUMPHREYS, OF ST. LOUIS, MISSOURI.

PAPER-BOX-FORMING MACHINE.

Specification of Letters Patent.

Patented Feb. 20, 1912.

To all whom it may concern:

Be it known that we, ADOLPH G. WOBUS and WALTER L. HUMPHBEYS, citizensof the United States, and residents of St. Louis, Missouri, haveinvented certain new and useful Improvements in Paper-BoX-FormingMachines, of which the following is a specification.

This invention relates to improvements in a paper box forming machine,and has for its object a hopper in which the blanks are stacked, anautomatic feeding device for advancing each individual blank at a properperiod over a die, and a plunger for pressing the blank through the dieand simultaneously forming the ends and side walls of the box.

A feature of our invention is to construct a machine having a dieconstructed adjustably so as to accommodate various sizes of blanks forthe construction of various sizes of boxes, and a device for feeding theblanks over the die.

Figure 1 is a side elevation of our complete invention. Fig. 2 is an endview of Fig. 1 viewing the same in the direction indicated by arrow 1.Fig. 3 is a top plan view of the same. Fig. 4 is an enlarged view of theadjustable die frame. Fig. 5 is an enlarged sectional view of the dieframe taken on the line 5-5 of Fig. 4. Figs. 6 and 7 are detail views ofcams made use of in operating our invention. Fig. 8 is an enlargedsectional view of one of the extension rollers made use of in connectionwith the die. Fig. 9 is an enlarged sectional view of the hopper and thefeeder plate. Fig. 10 is a detail view of the pivotal connection carriedby the feeder plate.

In carrying out our invention we provide a suitable supporting frame orstand ard 11 on the top of which is mounted a bed plate 12, and on saidbed plate is securely bolted, or otherwise fastened a pair of brackets13, on each side, and on the top of said brackets are located adjustableangle bars 14 to which are secured uprights 15 and 16, the upright 16being tapered as shown in Fig. 1 to accommodate the easy insertion ofthe straw board blanks, which are first cut to the size required for theformation of the box. The under side of the hopper which is formed bythe uprights is open and the blanks are supported therein by the feederplate 17, the forward end of the feeder plate being recessed asindicated contacting with the edge of said blank, pass- I ing smoothlybeneath the stack of blanks and advance the same in proper position overthe die.

The feeder plate is supported on a sliding block 20, which operates onthe guide rods 21, one end of said rods secured to the bracket 13, theother end to the angle bar 22 supported on the bed plate.

The ends of the block 20 are provided with trunnions 23, on which arepivotally mounted the pivotal connection 24 (see Fig. 10). In thisconnection is secured one end of the rods 25, the opposite ends of saidrods pivotally connected to the upper end of the levers 26, and saidlevers are pivotally supported on a shaft 27 supported in the frame, orupright 11. These levers are so located as to project one on each sideof the bed plate 12 (see Fig. 2). The levers 26 are provided with disks28, and connecting the same is a rod 29 to which one end of a coilspring 30 is attached. The levers 26 are also provided with a rollershown by dotted lines in Fig. 1, and indicated by the numeral 31, theserollers are located on the outside of p the levers and are so arrangedas to contact with the cams 32 mounted on the driving shaft 33. Thesecams are so set as to operate the levers at a proper period bringing thelongest point of contact of said cam in operation with the rollers 31,to place the feeder table in its normal rearward position,

as shown in Fig. 1 ready to receive and advance another blank. On theshaft 33 is also mounted cams 34 which contact with rollers 35 locatedon the levers 36 pivotally connected to the frame by means of the shaft37, said levers 36 also provided with disks 38 connected together by therod 39 to which the other end of the spring 30 is attached. The disks 28and 38 are firmly attached to the levers so as to prevent the same fromoperating independently. The opposite end of the levers 36 are connectedto the vertical bars 39, which extend upwardly on the side of the bedplate, the upper ends connected to the heads 40, which support theplunger bar 41. The heads 40 are slidably mounted upon the posts 42secured to the bed plate, and upon said posts the heads 40 together withthe plunger bar 41 are permitted to be raised and lowered. On theplunger bar 41 is suspended the plunger head, or male portion of the die43.

The shaft 33 is provided with the driving pulleys 44, by which themechanism is driven, and also on said shaft, and centrally located is anelongated pulley 45, over which an endless belt or conveyer 46 operates.

The adjustable die frame is constructed as follows: Firmly attached tothe bed frame are angle bars 47 and 48 arranged parallel with each other(see Fig. 4), and are each provided with elongated slots 49 throughwhich bolts 50 are passed. To the angle bars 47 and 48 are supportedparallel angle bars 51 and 52, also provided with elongated slots 53,and beneath the angle bars 51 and 52, and supported by bolts 54 passedthrough the slots 53 is an angle bar 55 provided with elongated slots56. On the bar 48 is firmly attached a pair of brackets 56 between whichis rotatably mounted a roller 58. On the bars 51 and 52 are providedbrackets 59 between which are rotatably mounted rollers 60. On the bar55 is mounted a pair of brackets 61, which are provided with bolts 62,which pass through the slots 56 so that said brackets can be adjusted toaccommodate the insertion of various lengths of rollers so as to conformto the required die opening. Between these brackets is inserted ouradjustable roller 63, a detail of which is shown in Fig. 8, and itconsists of a hollow portion 64 in which is inserted the spindle 65forming part of the opposite end of said roller, and upon said spindleis placed any number of washers 66. By applying or removing thesewashers, the roller 63 can be shortened or lengthened, if desired, so asto conform to the size of the opening between the rollers 58, 60 and 63.The roller 58 is arranged to remain in its set position. In order toshorten the length of the box the rollers 60, together with theirsliding angle bars 51 and 52 are moved upwardly by adjusting the same inthe slots 56 of the bar 55. To shorten the length it is necessary toshorten the roller 63, to do this several of the washers are removed andthe brackets 61 are adjusted accordingly, and to shorten the width, ifdesired, the bar 55 is adjusted in the slots 53 formed in the bars 51and 52. By this means of adjustment various sizes of boxes can beconstructed without the necessity of providing a separate and distinctdie for each size. When the die is adjusted to a given size it isnecessary for the operator to provide a plunger head 43 of the requiredsize, this is done by removing and replacing the head with one of a sizesufficient to correspond with the die opening.

The plunger and the feeder table are operated alternately by the spring30 in conjunction with the release of the cams, and after one of theblanks has been advanced and placed in position over the die, the blankis held. in this position and prevented from returning with the feedertable on its backward movement by the dog 67 con nected to the forwardend of the hopper. This dog is so arranged as to permit the same to passfreely over the blank as the same is being advanced, and when passed,permitted to contact with the edge thereof and retain the same inposition over the die.

The operation of our invention is as follows: In the first instance theseveral rollers forming the die are adjusted in accordance with the sizeof box to be formed. The blanks which have been previously cut inaccordance are placed in the hopper, the driving shaft is then placed inoperation and after the cams 32 are operated and the highest point ofcontact of said cams passing over the rollers 31, at the same time therollers 35 riding on the highest point of contact of the cams 34,retaining the plunger in its position, the contraction of the coilspring pulls upon the levers 26 advancing the feeder plate forwardcarrying with it the lowest blank of straw board, placing it in positionover the die. At this period the cams 34 have advanced at a point wherethe rollers 35 have passed the highest point of contact, on the otherhand the highest point of contact of the cams 32 is in communicationwith the rollers 31 and commences to operate the feeder table rearwardlyto its position to receive a second blank. By the operation the tensionof the spring operates against the levers 36 pulling downwardly upon thedie, causing the same to pass between the several rollers carrying withit the blank, and by this operation forming the sides and ends of thebox, and what is termed commercially as folding. The folded blank afterpassing through the die is permitted to fall upon the endless belt orconveyer and is carried to a convenient location, where the same areremoved.

Having thus fully described our invention, what we claim as new anddesire to have secured to us by the grant of Letters Patent, is:

1. A paper box forming machine comprising a frame, a bed plate, anadjustable die mounted thereon and formed of rollers, one'of saidrollers being formed in sections, a plunger, a feeder plate foradvancing blanks over the die and a cam operating mechanism foroperating the feeder plate and plunger alternately, substantially asspecified.

2. A device of the class described comprising a frame, a bed plate, adie comprising rollers one of said rollers being sectional adjustablymounted, a sliding feeder plate, a hopper, a plunger located above thedie, a lever mechanism for operating the plunger and the feeder platealternately, and cams for controlling the movement of said levers,substantially as specified.

3. A device of the class described comprising a frame, a bed plate, ahopper mounted on said frame in which the blanks are placed, a slidingfeeder plate operating beneath the hopper, a die located in advance ofthe hopper, a plurality of adjustable rollers one of said rollers beingformed of sections forming the die frame, a plunger corresponding withthe opening of the die arranged to operate therein, levers operating theplunger and the feeder plate, cams communicating with the levers forplacing the same in operation alternately and a spring for controllingthe movement of said levers when released by the cams, substantially asspecified.

4. A paper box folding machine comprising a frame, a bed plate mountedthereon, a hopper supported above the bed plate, a feeder plate locatedbeneath the hopper and supported on the bed frame, a die located inadvance of the hopper, said die composed of a plurality of adjustablerollers forming the ends and one side of the die a sectional rollerforming the other side of the die, an adjustable frame supporting therollers, a plunger of asize to correspond with the opening of the die,levers connected to the plunger and levers connected to the feeder platefor operating the same, and cams supported in the frame for operatingthe levers alternately, substantially as specified.

In testimony whereof, we have signed our names to this specification, inpresence of two subscribing witnesses.

ADOLPH G. WOBUS. WVALTER L. HUMPHREYS. WVitnesses:

ALFRED A. EIoKs, WALTER C. STEIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. 0.

